Act 4: Return to Azeroth

With the destruction of Alterac, the Orcish armies in the north have staged a massive retreat. Admiral Proudmoore sends word that Gnomish Submarines have located the Horde’s main naval base near Crestfall.

Admiral Proudmoore believes that the Orcs plan to launch the remainder of their armada and retreat to the mainland of Azeroth. Lord Lothar has ordered that you destroy the base at Crestfall before the fleet can escape.